Knowledge of system structure of AOI automatic optical detector
Author:Chen Hongcheng Time:2021-06-11 09:53 Browse(719)
Knowledge of AOI system architecture, touch screen and OLED forum
At present, in the SMT industry, Deloitte AOI automatic optical detector has become an important testing equipment for manufacturing product quality. Choosing the AOI automatic optical detector suitable for your own needs has become the most concerned thing for the electronic manufacturers. According to the practical work experience of Deloitte AOI automatic optical detector for many years, Zhichi Technology Co., Ltd, Here, I'd like to give you some help by analyzing the system structure advantages of German AOI automatic optical detector% y( R4 h( F5 h1、 Composition structure;) y" ]' J.
?% K" ? 3 f1 _% W * taoi automatic optical detector is composed of CCD vision system, mechanical hardware system, software control system and operation analysis platform.

Knowledge of system structure of AOI automatic optical detector

1;#'- P: X / A1, D, X2, mechanical hardware system is mainly used to transfer the detected products to the designated detection point; 8 X* i5 C% \& {6 k. L, x3. The software control system is mainly used to analyze and process the collected images.
the integration of these major systems is completed by the software system.
therefore, the quality of the software is an important factor in the detection ability of AOI automatic optical detector.
in this paper, the software control system is introduced1 ~$ b* r0 F& q2 z4 Z.
{- Y& [' h* c, c; 2. Selection of visual control system c   `$ f/ F* ?" e, OThe visual control system of AOI automatic optical detector is mainly composed of CCD industrial camera and light source   z4 A& c: c. z! The camera of AOI automatic optical detector can be divided into area array camera and line array camera according to the mode of taking image.
. S7]: R4 S4 I + ^% ~ * V; o& w2. The area array camera takes pictures one by one/ I: k% U: M8 P9 e7 eLinear array camera is a progressive scanning method for image acquisition.
the advantages of area array camera are good image restoration, easy to adjust the lighting angle, and easy to get a clearer image, so most manufacturers use this kind of camera on the market.
the advantages of area array camera are that it has good image restoration, easy to adjust the lighting angle, and easy to get a clearer image; t& a! Q # s / S $E3, selection of light source3 W0 {: l   ?# ]+ Q8 B # [(f) light source is the eye of AOI automatic optical detector.
the quality of light source is the key to determine the detection ability of AOI automatic optical detector.
the detection ability of AOI automatic optical detector depends on the quality of light source( Q6 W- D1 ]+ X: ?   G" S! L3 t8 i4 ?+ A( S5 ? 9 p - T9 X7 n. [1 B 3. Selection of mechanical system:; n0 t0 [+ L- y% f1 c1 k# DAt present, there are three kinds of motors used in AOI automatic optical detector, which are linear motor, servo motor and stepper motor.
servo motor and stepper motor are mainly used in the market.
; L! U* {% J/ k: [" z! u7 d1. The linear motor has high accuracy.
but it is expensive.
- K: Q7 c * [2 K: {T4 Q5 k]2. The accuracy of servo motor is second only to linear motor; f    J) [8 y8 c3. The accuracy of stepper motor is low.
but the price is very cheap. The quality of detection using stepper motor as the driving device is not credible, but it is effective to fight a price war.
therefore, the selection of motor should be considered according to the cost performance.
the AOI automatic optical detector with servo motor as the driving device should be selected, which will achieve better cost performance.
in this paper, the design of AOI automatic optical detector with servo motor as the driving device is introduced0 @' P* Z' y8 @7 p) H' d) Q9 o5 \; W + X: [4 C (C 4) software control system 2 s. {"P 0 ^ 'I # U" K-K # Q% S1 I2 CSoftware system is the soul of AOI automatic optical detector.
the quality of software algorithm directly affects the detection effect.
the standard of software consideration is as follows:9 ^7 A! f/ ?/ X4 A: N1, software development environment 8 {) ^ (T% C4 J3 R)The software development environment is very important for the program control of AOI automatic optical detector.
the application software for voice development.
the program is stable and reliable.
2 '"
b3 u8 e& {8 [8 c2. Algorithm of software   v' Y+ T7 s! R: There are many algorithms in H: J (H3) software, such as gray extraction, edge recognition, solid modeling, statistical shape modeling and topology0 \% g$ W    s& \) S7 \0 h) U! h* w# U' @% E5、 Function selection% N8 L- G4 W    i. J9 K0 H & Y1, the choice of resolutionN    D% O0 E# _' d' V3 v' `The resolution of AOI automatic optical detector should be judged by the pixel size, that is, the spatial resolution.
the pixel size is not the standard to judge the detection ability of AOI automatic optical detector.
the pixel size is not the standard to judge the detection ability of AOI automatic optical detector; F& S* P" j9 X6 ?( a3 r& n/ W1 ~: '$e' \ \ 2V (I # J: Z2, the choice of CAD & G4e. M8m + B "R: CAt present, most AOI automatic optical detectors have CAD data import function.
however, the use of this function is not very efficient for PCBA board with fewer components, while it can achieve twice the result with half the effort for PCBA board with more components.
% n / E2 W & T9 B # E. [3]_ 2 e& u5 V6 O' Y& e" y) r2 O3. Selection of special functions/U (U5 | & x0 F + [(T3] 7 m if you want to test PCBA of multi connected board.
you must select AOI automatic optical detector with springboard function, that is, area selection function.
1 P1 p $\ * B (D3 C2@; F    a) W    y9 K8 v' sIf it is used for quality process control.
it is necessary to select AOI automatic optical detector with RPC function, that is, with real-time process control.
+ A    N3 y6 |. x. }2 Q$ T/ T2 J) ]- A( f.
L0 Y4 \4 k& Q1 N8 y/ |0 ~" C" X/ ~- @: m$ }.
.
.
.
.
.
Related topics